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staging: nvec: release sync write lock in error case 

We forgot to release the sync write lock in case the async write
fails. Found by rpiloose on IRC.

Signed-off-by: Marc Dietrich <marvin24@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Marc Dietrich 2012-08-19 19:03:07 +02:00 committed by Greg Kroah-Hartman
parent 4344379f63
commit 4b8bf03d7f
1 changed files with 3 additions and 1 deletions
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4
drivers/staging/nvec/nvec.c
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@ -294,8 +294,10 @@ struct nvec_msg *nvec_write_sync(struct nvec_chip *nvec,
nvec->sync_write_pending = (data[1] << 8) + data[0];
if (nvec_write_async(nvec, data, size) < 0)
if (nvec_write_async(nvec, data, size) < 0) {
mutex_unlock(&nvec->sync_write_mutex);
return NULL;
}
dev_dbg(nvec->dev, "nvec_sync_write: 0x%04x\n",
nvec->sync_write_pending);